Journal article

Measuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantilevers

Abstract:: High-temperature micro-fracture tests of a industrial grade W–1%Ta alloy were performed from room temperature up to 700 °C, using chevron-notched micro-cantilevers. A gradual increase of conditional fracture toughness (KQc) was measured with increasing temperature, and a microscale brittle-to-ductile transition temperature (BDTT) was found at ~600 °C. This is slightly higher than macroscopic three-point bending tests from the same material (~400 °C), and contradicts most literatures for pure tungsten that shows a significant lower micro-BDTT. The results suggested that the BDTT is independent of the specimen size, and the higher micro-BDTT is due to the tantalum in this alloy.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Li, B.-S., Marrow, T. J., & Armstrong, D. E. J. (2020). Measuring the brittle-to-ductile transition temperature of tungsten–tantalum alloy using chevron-notched micro-cantilevers. Scripta Materialia, 180, 77–82.

MLA Style

Li, B.-S., et al. “Measuring the Brittle-to-Ductile Transition Temperature of Tungsten–Tantalum Alloy Using Chevron-Notched Micro-Cantilevers.” Scripta Materialia, vol. 180, Elsevier, 2020, pp. 77–82.

Chicago Style

Li, B-S, TJ Marrow, and DEJ Armstrong. 2020. “Measuring the Brittle-to-Ductile Transition Temperature of Tungsten–Tantalum Alloy Using Chevron-Notched Micro-Cantilevers.” Scripta Materialia 180: 77–82.
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Files:: Manuscript_author_version.pdf

(Preview, Accepted manuscript, 1.0MB, Terms of use)

Publisher copy:: 10.1016/j.scriptamat.2020.01.030

Authors

+ Li, B-S More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Materials
Role:: Author

+ Marrow, TJ More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Materials
Role:: Author
ORCID:: 0000-0001-6120-9826

+ Armstrong, DEJ More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Materials
Role:: Author
ORCID:: 0000-0002-5067-5108

Publisher:: Elsevier
Journal:: Scripta Materialia More from this journal
Volume:: 180
Pages:: 77-82
Publication date:: 2020-02-04
Acceptance date:: 2020-01-24
DOI:: 10.1016/j.scriptamat.2020.01.030
ISSN:: 1359-6462

Language:: English
Keywords:: BDTT

high-temperature micromechanics

tungsten alloy

micro-fracture tests

crack tip plasticity

FFR
Pubs id:: 1084882
Local pid:: pubs:1084882
Deposit date:: 2020-02-04

Terms of use

Copyright holder:: Li et al.
Copyright date:: 2020
Rights statement:: Copyright © 2020. Published by Elsevier Ltd on behalf of Acta Materialia Inc. All rights reserved.

Licence:: CC Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND)

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